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v2fly/app/router/config.go
2022-06-25 19:42:40 +01:00

206 lines
5.4 KiB
Go

//go:build !confonly
// +build !confonly
package router
import (
"context"
"encoding/json"
"github.com/golang/protobuf/jsonpb"
"github.com/v2fly/v2ray-core/v5/app/router/routercommon"
"github.com/v2fly/v2ray-core/v5/common/net"
"github.com/v2fly/v2ray-core/v5/common/serial"
"github.com/v2fly/v2ray-core/v5/features/outbound"
"github.com/v2fly/v2ray-core/v5/features/routing"
"github.com/v2fly/v2ray-core/v5/infra/conf/v5cfg"
)
type Rule struct {
Tag string
Balancer *Balancer
Condition Condition
}
func (r *Rule) GetTag() (string, error) {
if r.Balancer != nil {
return r.Balancer.PickOutbound()
}
return r.Tag, nil
}
// Apply checks rule matching of current routing context.
func (r *Rule) Apply(ctx routing.Context) bool {
return r.Condition.Apply(ctx)
}
func (rr *RoutingRule) BuildCondition() (Condition, error) {
conds := NewConditionChan()
if len(rr.Domain) > 0 {
cond, err := NewDomainMatcher(rr.DomainMatcher, rr.Domain)
if err != nil {
return nil, newError("failed to build domain condition").Base(err)
}
conds.Add(cond)
}
var geoDomains []*routercommon.Domain
for _, geo := range rr.GeoDomain {
geoDomains = append(geoDomains, geo.Domain...)
}
if len(geoDomains) > 0 {
cond, err := NewDomainMatcher(rr.DomainMatcher, geoDomains)
if err != nil {
return nil, newError("failed to build geo domain condition").Base(err)
}
conds.Add(cond)
}
if len(rr.UserEmail) > 0 {
conds.Add(NewUserMatcher(rr.UserEmail))
}
if len(rr.InboundTag) > 0 {
conds.Add(NewInboundTagMatcher(rr.InboundTag))
}
if rr.PortList != nil {
conds.Add(NewPortMatcher(rr.PortList, false))
} else if rr.PortRange != nil {
conds.Add(NewPortMatcher(&net.PortList{Range: []*net.PortRange{rr.PortRange}}, false))
}
if rr.SourcePortList != nil {
conds.Add(NewPortMatcher(rr.SourcePortList, true))
}
if len(rr.Networks) > 0 {
conds.Add(NewNetworkMatcher(rr.Networks))
} else if rr.NetworkList != nil {
conds.Add(NewNetworkMatcher(rr.NetworkList.Network))
}
if len(rr.Geoip) > 0 {
cond, err := NewMultiGeoIPMatcher(rr.Geoip, false)
if err != nil {
return nil, err
}
conds.Add(cond)
} else if len(rr.Cidr) > 0 {
cond, err := NewMultiGeoIPMatcher([]*routercommon.GeoIP{{Cidr: rr.Cidr}}, false)
if err != nil {
return nil, err
}
conds.Add(cond)
}
if len(rr.SourceGeoip) > 0 {
cond, err := NewMultiGeoIPMatcher(rr.SourceGeoip, true)
if err != nil {
return nil, err
}
conds.Add(cond)
} else if len(rr.SourceCidr) > 0 {
cond, err := NewMultiGeoIPMatcher([]*routercommon.GeoIP{{Cidr: rr.SourceCidr}}, true)
if err != nil {
return nil, err
}
conds.Add(cond)
}
if len(rr.Protocol) > 0 {
conds.Add(NewProtocolMatcher(rr.Protocol))
}
if len(rr.Attributes) > 0 {
cond, err := NewAttributeMatcher(rr.Attributes)
if err != nil {
return nil, err
}
conds.Add(cond)
}
if conds.Len() == 0 {
return nil, newError("this rule has no effective fields").AtWarning()
}
return conds, nil
}
// Build builds the balancing rule
func (br *BalancingRule) Build(ohm outbound.Manager, dispatcher routing.Dispatcher) (*Balancer, error) {
switch br.Strategy {
case "leastping":
i, err := serial.GetInstanceOf(br.StrategySettings)
if err != nil {
return nil, err
}
s, ok := i.(*StrategyLeastPingConfig)
if !ok {
return nil, newError("not a StrategyLeastPingConfig").AtError()
}
return &Balancer{
selectors: br.OutboundSelector,
strategy: &LeastPingStrategy{config: s},
ohm: ohm,
}, nil
case "leastload":
i, err := serial.GetInstanceOf(br.StrategySettings)
if err != nil {
return nil, err
}
s, ok := i.(*StrategyLeastLoadConfig)
if !ok {
return nil, newError("not a StrategyLeastLoadConfig").AtError()
}
leastLoadStrategy := NewLeastLoadStrategy(s)
return &Balancer{
selectors: br.OutboundSelector,
ohm: ohm, fallbackTag: br.FallbackTag,
strategy: leastLoadStrategy,
}, nil
case "random":
fallthrough
case "":
return &Balancer{
selectors: br.OutboundSelector,
ohm: ohm, fallbackTag: br.FallbackTag,
strategy: &RandomStrategy{},
}, nil
default:
return nil, newError("unrecognized balancer type")
}
}
func (br *BalancingRule) UnmarshalJSONPB(unmarshaler *jsonpb.Unmarshaler, bytes []byte) error {
type BalancingRuleStub struct {
Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
OutboundSelector []string `protobuf:"bytes,2,rep,name=outbound_selector,json=outboundSelector,proto3" json:"outbound_selector,omitempty"`
Strategy string `protobuf:"bytes,3,opt,name=strategy,proto3" json:"strategy,omitempty"`
StrategySettings json.RawMessage `protobuf:"bytes,4,opt,name=strategy_settings,json=strategySettings,proto3" json:"strategy_settings,omitempty"`
FallbackTag string `protobuf:"bytes,5,opt,name=fallback_tag,json=fallbackTag,proto3" json:"fallback_tag,omitempty"`
}
var stub BalancingRuleStub
if err := json.Unmarshal(bytes, &stub); err != nil {
return err
}
if stub.Strategy == "" {
stub.Strategy = "random"
}
settingsPack, err := v5cfg.LoadHeterogeneousConfigFromRawJSON(context.TODO(), "balancer", stub.Strategy, stub.StrategySettings)
if err != nil {
return err
}
br.StrategySettings = serial.ToTypedMessage(settingsPack)
br.Tag = stub.Tag
br.Strategy = stub.Strategy
br.OutboundSelector = stub.OutboundSelector
br.FallbackTag = stub.FallbackTag
return nil
}